Python code coverage for Lib/ctypes/test/test_struct_fields.py

#	count	content
1	n/a	import unittest
2	n/a	from ctypes import *
3	n/a
4	n/a	class StructFieldsTestCase(unittest.TestCase):
5	n/a	# Structure/Union classes must get 'finalized' sooner or
6	n/a	# later, when one of these things happen:
7	n/a	#
8	n/a	# 1. _fields_ is set.
9	n/a	# 2. An instance is created.
10	n/a	# 3. The type is used as field of another Structure/Union.
11	n/a	# 4. The type is subclassed
12	n/a	#
13	n/a	# When they are finalized, assigning _fields_ is no longer allowed.
14	n/a
15	n/a	def test_1_A(self):
16	n/a	class X(Structure):
17	n/a	pass
18	n/a	self.assertEqual(sizeof(X), 0) # not finalized
19	n/a	X._fields_ = [] # finalized
20	n/a	self.assertRaises(AttributeError, setattr, X, "_fields_", [])
21	n/a
22	n/a	def test_1_B(self):
23	n/a	class X(Structure):
24	n/a	_fields_ = [] # finalized
25	n/a	self.assertRaises(AttributeError, setattr, X, "_fields_", [])
26	n/a
27	n/a	def test_2(self):
28	n/a	class X(Structure):
29	n/a	pass
30	n/a	X()
31	n/a	self.assertRaises(AttributeError, setattr, X, "_fields_", [])
32	n/a
33	n/a	def test_3(self):
34	n/a	class X(Structure):
35	n/a	pass
36	n/a	class Y(Structure):
37	n/a	_fields_ = [("x", X)] # finalizes X
38	n/a	self.assertRaises(AttributeError, setattr, X, "_fields_", [])
39	n/a
40	n/a	def test_4(self):
41	n/a	class X(Structure):
42	n/a	pass
43	n/a	class Y(X):
44	n/a	pass
45	n/a	self.assertRaises(AttributeError, setattr, X, "_fields_", [])
46	n/a	Y._fields_ = []
47	n/a	self.assertRaises(AttributeError, setattr, X, "_fields_", [])
48	n/a
49	n/a	if __name__ == "__main__":
50	n/a	unittest.main()